NSS Labs performs recurring, standardized testing of web browser security. This includes rating protection against socially engineered malware and phishing attacks. The results are based upon empirically validated evidence gathered by NSS Labs during continuous 24x7 testing against fresh, live malicious sites.

During Q3, 2009 NSS Labs performed the second group test of web browser protection against socially engineered malware and phishing attacks. This report examines the ability of five different web browsers to protect users from this leading threat. The results are based upon empirically validated evidence gathered by NSS Labs during 12 days of 24x7 testing against fresh, live malicious sites.